105 lines
4.0 KiB
C++
Executable File
105 lines
4.0 KiB
C++
Executable File
#ifndef __DECODED_BIT_STREAM_PARSER_DM_H__
|
|
#define __DECODED_BIT_STREAM_PARSER_DM_H__
|
|
|
|
/*
|
|
* DecodedBitStreamParser.h
|
|
* zxing
|
|
*
|
|
* Created by Luiz Silva on 09/02/2010.
|
|
* Copyright 2010 ZXing authors All rights reserved.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <string>
|
|
#include <sstream>
|
|
#include <zxing/common/Array.h>
|
|
#include <zxing/common/BitSource.h>
|
|
#include <zxing/common/Counted.h>
|
|
#include <zxing/common/DecoderResult.h>
|
|
|
|
|
|
namespace zxing {
|
|
namespace datamatrix {
|
|
|
|
class DecodedBitStreamParser {
|
|
private:
|
|
static const int PAD_ENCODE = 0; // Not really an encoding
|
|
static const int ASCII_ENCODE = 1;
|
|
static const int C40_ENCODE = 2;
|
|
static const int TEXT_ENCODE = 3;
|
|
static const int ANSIX12_ENCODE = 4;
|
|
static const int EDIFACT_ENCODE = 5;
|
|
static const int BASE256_ENCODE = 6;
|
|
|
|
/**
|
|
* See ISO 16022:2006, Annex C Table C.1
|
|
* The C40 Basic Character Set (*'s used for placeholders for the shift values)
|
|
*/
|
|
static const char C40_BASIC_SET_CHARS[];
|
|
|
|
static const char C40_SHIFT2_SET_CHARS[];
|
|
/**
|
|
* See ISO 16022:2006, Annex C Table C.2
|
|
* The Text Basic Character Set (*'s used for placeholders for the shift values)
|
|
*/
|
|
static const char TEXT_BASIC_SET_CHARS[];
|
|
|
|
static const char TEXT_SHIFT3_SET_CHARS[];
|
|
/**
|
|
* See ISO 16022:2006, 5.2.3 and Annex C, Table C.2
|
|
*/
|
|
int decodeAsciiSegment(Ref<BitSource> bits, std::ostringstream& result, std::ostringstream& resultTrailer);
|
|
/**
|
|
* See ISO 16022:2006, 5.2.5 and Annex C, Table C.1
|
|
*/
|
|
void decodeC40Segment(Ref<BitSource> bits, std::ostringstream& result);
|
|
/**
|
|
* See ISO 16022:2006, 5.2.6 and Annex C, Table C.2
|
|
*/
|
|
void decodeTextSegment(Ref<BitSource> bits, std::ostringstream& result);
|
|
/**
|
|
* See ISO 16022:2006, 5.2.7
|
|
*/
|
|
void decodeAnsiX12Segment(Ref<BitSource> bits, std::ostringstream& result);
|
|
/**
|
|
* See ISO 16022:2006, 5.2.8 and Annex C Table C.3
|
|
*/
|
|
void decodeEdifactSegment(Ref<BitSource> bits, std::ostringstream& result);
|
|
/**
|
|
* See ISO 16022:2006, 5.2.9 and Annex B, B.2
|
|
*/
|
|
void decodeBase256Segment(Ref<BitSource> bits, std::ostringstream& result, std::vector<char> byteSegments);
|
|
|
|
void parseTwoBytes(int firstByte, int secondByte, int* result);
|
|
/**
|
|
* See ISO 16022:2006, Annex B, B.2
|
|
*/
|
|
char unrandomize255State(int randomizedBase256Codeword,
|
|
int base256CodewordPosition) {
|
|
int pseudoRandomNumber = ((149 * base256CodewordPosition) % 255) + 1;
|
|
int tempVariable = randomizedBase256Codeword - pseudoRandomNumber;
|
|
return (char)(tempVariable >= 0 ? tempVariable : (tempVariable + 256));
|
|
};
|
|
void append(std::ostream& ost, const char* bufIn, size_t nIn, const char* src);
|
|
|
|
public:
|
|
DecodedBitStreamParser() { };
|
|
Ref<DecoderResult> decode(ArrayRef<char> bytes);
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif // __DECODED_BIT_STREAM_PARSER_DM_H__
|